Abbey always gets zits on her chin and she can't figure out the best method to get rid of them. She decides to test several products to see which clears her face up fastest washing with soap and water, washing with an acne face Wash from the pharmacy, and washing her face with organie oils For one week she just washes her face with water. The next wock she washes every day with soap and water. The following wock she uses the acne wash, and the last week she uses the organic oils Each week she records the number of zits she has on her chin at the end of the day. Independent Variable
Dependent Variable
Hypothesis
control group
Experimental group
Constants
possible threats to accuracy of results?
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In one day there are too high tides into low tides and equally spaced intervals the high tide is observed to be 6 feet above the average sea level after six hours passed a low tide occurs at 6 feet below the average sea level in this task you will model this occurrence using a trigonometric function by using x as a measurement of time assume the first high tide occurs at x=0. a. what are the independent and dependent variables? b. determine these key features of the function that models the tide: 1.amplitude 2.period 3.frequency 4.midline 5.vertical shift 6.phase shift c. create a trigonometric function that models the ocean tide for a period of 12 hours. d.what is the height of the tide after 93 hours?